ISO 10313:1993 环境空气.臭氧质量浓度测定.化学发光法

标准编号：ISO 10313:1993

中文名称：环境空气.臭氧质量浓度测定.化学发光法

英文名称：Ambient air — Determination of the mass concentration of ozone — Chemiluminescence method

发布日期：1993-04

标准范围

规定的方法基于在空气样品进入化学发光分析仪之前，以恒定流速通过颗粒过滤器连续抽取空气样品。然后流入反应室，与过量的乙烯混合。臭氧和乙烯瞬间反应，在可见光区域产生光（最大约400 nm）。发射的光强度与空气样品中的臭氧浓度成正比，并由光电倍增管测量。适用于在参考条件下测定2μg/m^3至10 mg/m^3之间的臭氧质量浓度。

The method specified is based on drawing continuously, at a constant flow rate, an air sample through a particle filter before it enters the chemiluminescence analyser. It then flows into a reaction chamber where it is mixed with an excess flow of ethylene. Ozone and ethylene react instantaneously to produce light in the visible region (maximum at about 400 nm). The emitted light intensity is proportional to the concentration of ozone in the air sample and is measured by a photomultiplier tube. Applies to determination of the mass concentration of ozone between 2 μg/m^3 and 10 mg/m^3 at the reference conditions.

标准预览图